Calm down dude, i know it's really hard to overcome your pain especially if you were loyal and you get hurt in return, but you are just hurting yourself by thinking about her if she didn't love then there is no reason of remembering her,.. now follow this you will feel better.. first of all 1- Get a hot n sexy GF (yeah more than her.. if she was lolz) 2- Introduce your new Gf to your ex- 3- Tell her that your new Gf is best Gf you ever had... 4- ...................... yeah you got it make her jealous and i am damn sure after this you will feel better, better n then best!
Do this and you're going to lose both of the girls. Bragging about your GFs against each other is something a jerk would do.